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. 1997 Jun 2;137(5):1185–1196. doi: 10.1083/jcb.137.5.1185

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Type IV collagen distribution in Class II emb-9 mutants. Staining of st540 (A) and cg56 (B) homozygous embryos with anti– LET-2 antiserum. Type IV collagen accumulates in a perinuclear ring in st540 mutant embryos (A, arrows), while it primarily accumulates in two spots on either side of the nucleus in cg56 mutant embryos (B, arrows). The same pattern is seen with EMB-9 and LET-2 antisera. st545 shows the same pattern as st540, while all other emb-9 and let-2 mutants look like cg56.